minimally invasive methods for replacement of missing teeth

Question 1

reasons for minimally invasive concepts

Answer 1

1) understanding of diseases
2) total patient care and oral/general care
3) adhesive dentistry
4) modern materials
—
1) keep simple and conservative, since no restorative material is as good as tooth
2) restorative spiral

Question 2

traditional

Answer 2

1) fillings, full crowns, endo, implants/conventional fixed/removable, edentulism

Question 3

current

Answer 3

1) fillings, bonded inlays/onlays, crowns, endo, implants/bonded or conventional fixed/removable…. edentulism

Question 4

advantages of replacing teeth

Answer 4

1) appearance
2) occlusal stability
3) function
4) speech
5) periodontal splinting/orthodontic retention
6) feeling of completeness
7) restoring VDO

Question 5

disadvantages of replacing teeth

Answer 5

1) damage to tooth or pulp
2) plaque leading to caries and periodontal disease
- increased plaque retention
3) failures
4) cost
5) discomfort

Question 6

options for missing tooth

Answer 6

1) no replacement
2) ortho
3) acrylic denture
4) metal denture
5 )bridges
- minimal prep/resin bonded/adhesive
- conventional
6) implant supported restoration

Question 7

which one of the these are most likely to increase plaque retention

Answer 7

1) bridge
2) implant
3) acrylic denture
4) metal denture

Question 8

removable vs fixed

Answer 8

1) general health
2) confidence/age/preference/attitude/expectations
3) occupation
4) appearance

Question 9

implants

Answer 9

1) not the only option when we see a space

Question 10

partial dentures

Answer 10

1) its about assessment
2) patient
3) mouth
- general assessment
- caries
- perio/OH
4) covering least amount of tissue as possible

Question 11

health dentures

Answer 11

1) minimal coverage
2) least number of components that will make it successful
3) metal or acrylic
4) bar or plate

Question 12

does a bridge always look better than denture

Answer 12

1) no
2) when there is bone loss

Question 13

conventional bridges

Answer 13

1) fixed-fixed
2) fixed-moveable
3) cantilever

Question 14

minimal/no prep/resin bonded

Answer 14

1) fixed-fixed
2) fixed-moveable
3) cantilever

Question 15

conventional bridge pros and cons

Answer 15

1) pros
- good long term prognosis
- can give good appearance
- large choice of design and materials
- adaptable

2) cons
- destructive
- difficult to prepare especially fixed fixed
- difficult to make
- expensive
- difficult to remove

Question 16

fixed fixed

Answer 16

1) good retention and strength
2_ good for splinting
3) good for large bridges and longer spans
4) preps need to have draw
5) all retainers need to be major
6) cemented in one piece

Question 17

fixed movable

Answer 17

1) no need for parallel
2) more conservative
3) parts can be cemented separated
4) length of span limited
5) more difficult to make in lab
6) difficult to temporize

Question 18

cantilever

Answer 18

1) most conservative
2) one abutment
3) easy to make
4) anterior region
5) length of span limited
6) needs to be used with care in posterior
7) must be rigid

Question 19

shortened dental arch, what is acceptable

Answer 19

1) 20 well distributed teeth
2) adequate function and masticatory ability
3) consider esthetics

Question 20

why do it?

Answer 20

1) simple
2) adequate function
3) less plaque
4) more comfortable
5) distal extension saddle denture is often not worn
6) cost
7) avoid failure

Question 21

adhesive bridges

Answer 21

1) fixed dental prosthesis bonded mostly to enamel
2) early design had perforations on the lingual plate
3) went onto the maryland bridge eliminated need to perforations
–
1) macromechanical
- rochette
2) micromechanical
- maryland - electrolytically etched
- resin bonded - sandblasted
- adhesive cement - panavia
—
1) conservative, easy to prepare, cheaper, easy to remove
2) 7-10 years, not as long lasting

Question 22

design is very importnat

Answer 22

1) surface area is important
2) wrap around
3) sandblasting/air abrasion
4) resin cement
5) careful bonding

Question 23

resin bonded bridges designs

Answer 23

1) cantilever
- used mostly
2) fixed-fixed
- prone to caries if one wing debonds
3) fixed-moveable

Question 24

why cantilever?

Answer 24

1) debonds and prevents unknown caries from developing

Question 25

success depends on the

Answer 25

1) maximum coverage
2) wrap around
3) surface treatment
4) correct bonding

Question 26

anterior teeth

Answer 26

1) cover the palatal lingual surface from incisal edge to the above gingival

Question 27

posterior

Answer 27

1) all of palatal lingual to the occlusal

Question 28

creating interocclusal space

Answer 28

1) preparation of abutment tooth
2) adjustment of opposing tooth
- may be acceptable if over erupted
- may expose dentine
3) relative axial movement

Question 29

temporization

Answer 29

1) only if abutment teeth are reduced to dentin
2) can add composite stop to maintain occlusal space

Question 30

alternative design

Answer 30

1) prepare grooves and slots to introduce retention